<%= image_tag @graph, :id => "graph1" if !@graph.nil? -%>
<%= image_tag @graph2, :id => "graph2" if !@graph2.nil? -%>
<%= image_tag @graph3, :id => "graph3" if !@graph3.nil? -%>
<%= image_tag @graph4, :id => "graph4" if !@graph4.nil? -%>
